This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A352566 #4 Mar 21 2022 11:27:35 %S A352566 1,2,1,5,1,2,0,10,2,2,0,5,0,0,1,20,2,4,2,5,0,0,2,10,2,0,3,0,0,2,2,36, %T A352566 0,4,0,10,0,4,0,10,0,0,0,0,2,4,2,20,1,4,2,0,2,6,0,0,2,0,0,5,2,4,0,65, %U A352566 0,0,0,10,2,0,0,20,0,0,2,10,0,0,2,20,5,0,2,0,2,0,0,0,0,4,0,10,2,4,2,36,0,2,0,10,0,4,0,0,0,4,2,15,2,0,0,0 %N A352566 a(n) = number of modules with n elements over the ring of integers in the imaginary quadratic field of discriminant -15. %C A352566 See A352550 for comments and PARI code. %Y A352566 Cf. A038540, A038541, A248107, A352550-A352567. %K A352566 nonn %O A352566 1,2 %A A352566 _N. J. A. Sloane_, Mar 21 2022